AR24 - Antoninus Pius L ΙΘ

Year 19 of Antoninus Pius's reign marked the final year of a notably long tenure for any prefect or administrative cycle in Roman Egypt, and Alexandrian mint output in this period was substantial — the billon tetradrachm series continued its slow debasement from the earlier Trajanic standard, with silver content by this point reduced to somewhere between 20 and 25 percent. Dattari 3378 is among the better-documented die pairings in the sequence, appearing with reasonable frequency in European collections derived from 19th-century Egyptian excavation lots.